PHILADELPHIA (AP) _ 6:45 a.m.

Cranes and heavy equipment are working to right the overturned cars from an Amtrak train that crashed in Philadelphia, killing at least seven people.

Investigators have determined the train was traveling at 106 mph Tuesday night before it ran off the rails along a sharp curve where the speed limit drops to just 50 mph.

The National Transportation Safety Board says the engineer applied the emergency brakes moments before the crash but slowed the train to only 102 mph by the time the locomotive’s black box stopped recording data.

The engineer refused to give a statement to police.